Without delay, let's solve this. We've got 777 and we will be multiplying it by 336, that is, adding 777 to itself 336 times.
Step 1: 0 + 777 = 777
Step 2: 777 + 777 = 1554
Step 3: 1554 + 777 = 2331
Step 4: 2331 + 777 = 3108
Step 5: 3108 + 777 = 3885
Step 6: 3885 + 777 = 4662
Step 7: 4662 + 777 = 5439
Step 8: 5439 + 777 = 6216
Step 9: 6216 + 777 = 6993
Step 10: 6993 + 777 = 7770
Step 11: 7770 + 777 = 8547
Step 12: 8547 + 777 = 9324
Step 13: 9324 + 777 = 10101
Step 14: 10101 + 777 = 10878
Step 15: 10878 + 777 = 11655
Step 16: 11655 + 777 = 12432
Step 17: 12432 + 777 = 13209
Step 18: 13209 + 777 = 13986
Step 19: 13986 + 777 = 14763
Step 20: 14763 + 777 = 15540
Step 21: 15540 + 777 = 16317
Step 22: 16317 + 777 = 17094
Step 23: 17094 + 777 = 17871
Step 24: 17871 + 777 = 18648
Step 25: 18648 + 777 = 19425
Step 26: 19425 + 777 = 20202
Step 27: 20202 + 777 = 20979
Step 28: 20979 + 777 = 21756
Step 29: 21756 + 777 = 22533
Step 30: 22533 + 777 = 23310
Step 31: 23310 + 777 = 24087
Step 32: 24087 + 777 = 24864
Step 33: 24864 + 777 = 25641
Step 34: 25641 + 777 = 26418
Step 35: 26418 + 777 = 27195
Step 36: 27195 + 777 = 27972
Step 37: 27972 + 777 = 28749
Step 38: 28749 + 777 = 29526
Step 39: 29526 + 777 = 30303
Step 40: 30303 + 777 = 31080
Step 41: 31080 + 777 = 31857
Step 42: 31857 + 777 = 32634
Step 43: 32634 + 777 = 33411
Step 44: 33411 + 777 = 34188
Step 45: 34188 + 777 = 34965
Step 46: 34965 + 777 = 35742
Step 47: 35742 + 777 = 36519
Step 48: 36519 + 777 = 37296
Step 49: 37296 + 777 = 38073
Step 50: 38073 + 777 = 38850
Step 51: 38850 + 777 = 39627
Step 52: 39627 + 777 = 40404
Step 53: 40404 + 777 = 41181
Step 54: 41181 + 777 = 41958
Step 55: 41958 + 777 = 42735
Step 56: 42735 + 777 = 43512
Step 57: 43512 + 777 = 44289
Step 58: 44289 + 777 = 45066
Step 59: 45066 + 777 = 45843
Step 60: 45843 + 777 = 46620
Step 61: 46620 + 777 = 47397
Step 62: 47397 + 777 = 48174
Step 63: 48174 + 777 = 48951
Step 64: 48951 + 777 = 49728
Step 65: 49728 + 777 = 50505
Step 66: 50505 + 777 = 51282
Step 67: 51282 + 777 = 52059
Step 68: 52059 + 777 = 52836
Step 69: 52836 + 777 = 53613
Step 70: 53613 + 777 = 54390
Step 71: 54390 + 777 = 55167
Step 72: 55167 + 777 = 55944
Step 73: 55944 + 777 = 56721
Step 74: 56721 + 777 = 57498
Step 75: 57498 + 777 = 58275
Step 76: 58275 + 777 = 59052
Step 77: 59052 + 777 = 59829
Step 78: 59829 + 777 = 60606
Step 79: 60606 + 777 = 61383
Step 80: 61383 + 777 = 62160
Step 81: 62160 + 777 = 62937
Step 82: 62937 + 777 = 63714
Step 83: 63714 + 777 = 64491
Step 84: 64491 + 777 = 65268
Step 85: 65268 + 777 = 66045
Step 86: 66045 + 777 = 66822
Step 87: 66822 + 777 = 67599
Step 88: 67599 + 777 = 68376
Step 89: 68376 + 777 = 69153
Step 90: 69153 + 777 = 69930
Step 91: 69930 + 777 = 70707
Step 92: 70707 + 777 = 71484
Step 93: 71484 + 777 = 72261
Step 94: 72261 + 777 = 73038
Step 95: 73038 + 777 = 73815
Step 96: 73815 + 777 = 74592
Step 97: 74592 + 777 = 75369
Step 98: 75369 + 777 = 76146
Step 99: 76146 + 777 = 76923
Step 100: 76923 + 777 = 77700
Step 101: 77700 + 777 = 78477
Step 102: 78477 + 777 = 79254
Step 103: 79254 + 777 = 80031
Step 104: 80031 + 777 = 80808
Step 105: 80808 + 777 = 81585
Step 106: 81585 + 777 = 82362
Step 107: 82362 + 777 = 83139
Step 108: 83139 + 777 = 83916
Step 109: 83916 + 777 = 84693
Step 110: 84693 + 777 = 85470
Step 111: 85470 + 777 = 86247
Step 112: 86247 + 777 = 87024
Step 113: 87024 + 777 = 87801
Step 114: 87801 + 777 = 88578
Step 115: 88578 + 777 = 89355
Step 116: 89355 + 777 = 90132
Step 117: 90132 + 777 = 90909
Step 118: 90909 + 777 = 91686
Step 119: 91686 + 777 = 92463
Step 120: 92463 + 777 = 93240
Step 121: 93240 + 777 = 94017
Step 122: 94017 + 777 = 94794
Step 123: 94794 + 777 = 95571
Step 124: 95571 + 777 = 96348
Step 125: 96348 + 777 = 97125
Step 126: 97125 + 777 = 97902
Step 127: 97902 + 777 = 98679
Step 128: 98679 + 777 = 99456
Step 129: 99456 + 777 = 100233
Step 130: 100233 + 777 = 101010
Step 131: 101010 + 777 = 101787
Step 132: 101787 + 777 = 102564
Step 133: 102564 + 777 = 103341
Step 134: 103341 + 777 = 104118
Step 135: 104118 + 777 = 104895
Step 136: 104895 + 777 = 105672
Step 137: 105672 + 777 = 106449
Step 138: 106449 + 777 = 107226
Step 139: 107226 + 777 = 108003
Step 140: 108003 + 777 = 108780
Step 141: 108780 + 777 = 109557
Step 142: 109557 + 777 = 110334
Step 143: 110334 + 777 = 111111
Step 144: 111111 + 777 = 111888
Step 145: 111888 + 777 = 112665
Step 146: 112665 + 777 = 113442
Step 147: 113442 + 777 = 114219
Step 148: 114219 + 777 = 114996
Step 149: 114996 + 777 = 115773
Step 150: 115773 + 777 = 116550
Step 151: 116550 + 777 = 117327
Step 152: 117327 + 777 = 118104
Step 153: 118104 + 777 = 118881
Step 154: 118881 + 777 = 119658
Step 155: 119658 + 777 = 120435
Step 156: 120435 + 777 = 121212
Step 157: 121212 + 777 = 121989
Step 158: 121989 + 777 = 122766
Step 159: 122766 + 777 = 123543
Step 160: 123543 + 777 = 124320
Step 161: 124320 + 777 = 125097
Step 162: 125097 + 777 = 125874
Step 163: 125874 + 777 = 126651
Step 164: 126651 + 777 = 127428
Step 165: 127428 + 777 = 128205
Step 166: 128205 + 777 = 128982
Step 167: 128982 + 777 = 129759
Step 168: 129759 + 777 = 130536
Step 169: 130536 + 777 = 131313
Step 170: 131313 + 777 = 132090
Step 171: 132090 + 777 = 132867
Step 172: 132867 + 777 = 133644
Step 173: 133644 + 777 = 134421
Step 174: 134421 + 777 = 135198
Step 175: 135198 + 777 = 135975
Step 176: 135975 + 777 = 136752
Step 177: 136752 + 777 = 137529
Step 178: 137529 + 777 = 138306
Step 179: 138306 + 777 = 139083
Step 180: 139083 + 777 = 139860
Step 181: 139860 + 777 = 140637
Step 182: 140637 + 777 = 141414
Step 183: 141414 + 777 = 142191
Step 184: 142191 + 777 = 142968
Step 185: 142968 + 777 = 143745
Step 186: 143745 + 777 = 144522
Step 187: 144522 + 777 = 145299
Step 188: 145299 + 777 = 146076
Step 189: 146076 + 777 = 146853
Step 190: 146853 + 777 = 147630
Step 191: 147630 + 777 = 148407
Step 192: 148407 + 777 = 149184
Step 193: 149184 + 777 = 149961
Step 194: 149961 + 777 = 150738
Step 195: 150738 + 777 = 151515
Step 196: 151515 + 777 = 152292
Step 197: 152292 + 777 = 153069
Step 198: 153069 + 777 = 153846
Step 199: 153846 + 777 = 154623
Step 200: 154623 + 777 = 155400
Step 201: 155400 + 777 = 156177
Step 202: 156177 + 777 = 156954
Step 203: 156954 + 777 = 157731
Step 204: 157731 + 777 = 158508
Step 205: 158508 + 777 = 159285
Step 206: 159285 + 777 = 160062
Step 207: 160062 + 777 = 160839
Step 208: 160839 + 777 = 161616
Step 209: 161616 + 777 = 162393
Step 210: 162393 + 777 = 163170
Step 211: 163170 + 777 = 163947
Step 212: 163947 + 777 = 164724
Step 213: 164724 + 777 = 165501
Step 214: 165501 + 777 = 166278
Step 215: 166278 + 777 = 167055
Step 216: 167055 + 777 = 167832
Step 217: 167832 + 777 = 168609
Step 218: 168609 + 777 = 169386
Step 219: 169386 + 777 = 170163
Step 220: 170163 + 777 = 170940
Step 221: 170940 + 777 = 171717
Step 222: 171717 + 777 = 172494
Step 223: 172494 + 777 = 173271
Step 224: 173271 + 777 = 174048
Step 225: 174048 + 777 = 174825
Step 226: 174825 + 777 = 175602
Step 227: 175602 + 777 = 176379
Step 228: 176379 + 777 = 177156
Step 229: 177156 + 777 = 177933
Step 230: 177933 + 777 = 178710
Step 231: 178710 + 777 = 179487
Step 232: 179487 + 777 = 180264
Step 233: 180264 + 777 = 181041
Step 234: 181041 + 777 = 181818
Step 235: 181818 + 777 = 182595
Step 236: 182595 + 777 = 183372
Step 237: 183372 + 777 = 184149
Step 238: 184149 + 777 = 184926
Step 239: 184926 + 777 = 185703
Step 240: 185703 + 777 = 186480
Step 241: 186480 + 777 = 187257
Step 242: 187257 + 777 = 188034
Step 243: 188034 + 777 = 188811
Step 244: 188811 + 777 = 189588
Step 245: 189588 + 777 = 190365
Step 246: 190365 + 777 = 191142
Step 247: 191142 + 777 = 191919
Step 248: 191919 + 777 = 192696
Step 249: 192696 + 777 = 193473
Step 250: 193473 + 777 = 194250
Step 251: 194250 + 777 = 195027
Step 252: 195027 + 777 = 195804
Step 253: 195804 + 777 = 196581
Step 254: 196581 + 777 = 197358
Step 255: 197358 + 777 = 198135
Step 256: 198135 + 777 = 198912
Step 257: 198912 + 777 = 199689
Step 258: 199689 + 777 = 200466
Step 259: 200466 + 777 = 201243
Step 260: 201243 + 777 = 202020
Step 261: 202020 + 777 = 202797
Step 262: 202797 + 777 = 203574
Step 263: 203574 + 777 = 204351
Step 264: 204351 + 777 = 205128
Step 265: 205128 + 777 = 205905
Step 266: 205905 + 777 = 206682
Step 267: 206682 + 777 = 207459
Step 268: 207459 + 777 = 208236
Step 269: 208236 + 777 = 209013
Step 270: 209013 + 777 = 209790
Step 271: 209790 + 777 = 210567
Step 272: 210567 + 777 = 211344
Step 273: 211344 + 777 = 212121
Step 274: 212121 + 777 = 212898
Step 275: 212898 + 777 = 213675
Step 276: 213675 + 777 = 214452
Step 277: 214452 + 777 = 215229
Step 278: 215229 + 777 = 216006
Step 279: 216006 + 777 = 216783
Step 280: 216783 + 777 = 217560
Step 281: 217560 + 777 = 218337
Step 282: 218337 + 777 = 219114
Step 283: 219114 + 777 = 219891
Step 284: 219891 + 777 = 220668
Step 285: 220668 + 777 = 221445
Step 286: 221445 + 777 = 222222
Step 287: 222222 + 777 = 222999
Step 288: 222999 + 777 = 223776
Step 289: 223776 + 777 = 224553
Step 290: 224553 + 777 = 225330
Step 291: 225330 + 777 = 226107
Step 292: 226107 + 777 = 226884
Step 293: 226884 + 777 = 227661
Step 294: 227661 + 777 = 228438
Step 295: 228438 + 777 = 229215
Step 296: 229215 + 777 = 229992
Step 297: 229992 + 777 = 230769
Step 298: 230769 + 777 = 231546
Step 299: 231546 + 777 = 232323
Step 300: 232323 + 777 = 233100
Step 301: 233100 + 777 = 233877
Step 302: 233877 + 777 = 234654
Step 303: 234654 + 777 = 235431
Step 304: 235431 + 777 = 236208
Step 305: 236208 + 777 = 236985
Step 306: 236985 + 777 = 237762
Step 307: 237762 + 777 = 238539
Step 308: 238539 + 777 = 239316
Step 309: 239316 + 777 = 240093
Step 310: 240093 + 777 = 240870
Step 311: 240870 + 777 = 241647
Step 312: 241647 + 777 = 242424
Step 313: 242424 + 777 = 243201
Step 314: 243201 + 777 = 243978
Step 315: 243978 + 777 = 244755
Step 316: 244755 + 777 = 245532
Step 317: 245532 + 777 = 246309
Step 318: 246309 + 777 = 247086
Step 319: 247086 + 777 = 247863
Step 320: 247863 + 777 = 248640
Step 321: 248640 + 777 = 249417
Step 322: 249417 + 777 = 250194
Step 323: 250194 + 777 = 250971
Step 324: 250971 + 777 = 251748
Step 325: 251748 + 777 = 252525
Step 326: 252525 + 777 = 253302
Step 327: 253302 + 777 = 254079
Step 328: 254079 + 777 = 254856
Step 329: 254856 + 777 = 255633
Step 330: 255633 + 777 = 256410
Step 331: 256410 + 777 = 257187
Step 332: 257187 + 777 = 257964
Step 333: 257964 + 777 = 258741
Step 334: 258741 + 777 = 259518
Step 335: 259518 + 777 = 260295
Step 336: 260295 + 777 = 261072

So, 777*336 = 261072